How to safely upload images in PHP,
This article describes the way PHP securely uploads images. Share to everyone for your reference. The specific analysis is as follows:
This code is used to upload images, you can detect the image according to the
Upload a place, upload a path, upload a verification, upload a breakthroughUpload place: Permission to upload (must login to the background, to browse the upload page. )No permission to upload (anyone can upload, just find the upload address.)
PHP implementation of image upload and replace the operation,
Create two files first: change.html and change.php
The form code for the change.html file is as follows:
Change file example.
Here are a few things to pay attention to, first look
Author: Tilt Rotation[Email protected]This article is an original article by the members of the Cora LabPart 1 AnalysisThis article mainly studies the security dog's packet analysis function, because many people thought that the safe dog is through
Use the cuploadfile provided by yii to upload images. This class only provides the upload function and does not support image processing functions such as reduction, sharpening, and rotation, therefore, the yii extension image must be used.
I.
In order for end users to upload files to your site, it is like opening another door to a malicious user who is endangering your server. Even so, in today's modern Internet Web applications, it is a common requirement as it helps to improve your
PHP secure image Upload method ,. PHP secure image Upload method. This article describes the PHP secure image Upload method. Share it with you for your reference. The code is used to upload images. you can use PHP to upload images safely,
This
Create two files first: change.html and change.php
The form code for the change.html file is as follows:
Change file example.
Here are a few things to pay attention to, first look at this sentence
,Here we use the Post method, the
This article mainly introduces the PHP safe upload image method, can detect the image type to achieve the function of security judgment picture, very practical value, the need for friends can refer to the next
This article describes the way PHP
First, let's take a look at the code of the uploaded form:
Code:
Type = "hidden" name = "max_file_size" value = "2000000"> file: Here are a few things to pay attention to. First, read this sentence ,Here we adopt the POST method, and some browsers
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